Alpine Astronomical Baader Red Colored Bandpass Eyepiece Filter (2")

Alpine Astronomical Baader Red Colored Bandpass Eyepiece Filter (2")

Alpine Astronomical Baader Red Colored Bandpass Eyepiece Filter (2")

B&H # ALFCFR2 MFR # FCFR-2
Alpine Astronomical Baader Red Colored Bandpass Eyepiece Filter (2")

Alpine Astronomical Baader Red Colored Bandpass Eyepiece Filter (2")

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Expected availability: 7-14 business days

Product Highlights

  • Planetary Viewing/Imaging Filter
  • 610nm Wavelength Bandpass
  • 2" Eyepiece Threads
  • 7-Layer Anti-Reflection Multi-Coated
  • No Reflections, Scatter or Image Dimming
  • Planeoptically Polished Optical Glass
  • 98% Throughput Transmission
  • Blackened Aluminum Frame
  • Stackable with Other Filters
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Color: Red, 610nm

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Size: 2"

1.25" 2"
$0 VA Sales Tax Collected on This Item

You Pay: $64.00

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Alpine Astronomical FCFR-2 overview

  • 1Description

Centered on the 610nm wavelength, the Alpine Astronomical Baader Red Colored Bandpass Eyepiece Filter can be used by itself or stacked with other filters to enhance your observations when viewing all of the planets and especially Jupiter, Saturn, and Mars. The optical glass filter is planeoptically polished and treated with seven-layer Phantom Group anti-reflection multi-coatings to improve contrast and clarity while eliminating reflections, scattering, or image dimming. Holding the filter is an black anodized aluminum frame made to fit standard 2" eyepieces and other accessories such as diagonals and Barlows.

Use
  • Steep absorption edge
  • Blue and green wavelengths are almost completely blocked, increasing contrast between the light and dark bands on Jupiter and Saturn
  • Most interesting filter to use for observing the polar caps of Mars
  • An ideal filter for daily observation of all the planets
  • 98% average transmission bandpass throughput
In the Box
Alpine Astronomical Baader Red Colored Bandpass Eyepiece Filter (2")
  • Plastic Case
  • Limited 2-Year Warranty
  • Table of Contents
    • 1Description

    Alpine Astronomical FCFR-2 specs

    Size 2"
    Filter Factor Red, 610nm wavelength
    Multi-Coated Yes
    Rotating No
    Application Lunar and planetary viewing and imaging
    Construction Glass filter, aluminum frame
    Front Filter Thread Size 2"
    Weight 2.3 oz / 66.0 g

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